Home / 38,421.75-53,022.03-21,654.75

Finding the Fourth Proportional to 38,421.75, 53,022.03 and 21,654.75

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Solution

The fourth proportional to 38,421.75, 53,022.03 and 21,654.75 is: 29,883.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421.75 : 53,022.03 = 21,654.75 : x
  2. Step 2: Convert to fraction form
    38,421.75/53,022.03 = 21,654.75/x
  3. Step 3: Cross multiply
    38,421.75x = 53,022.03 × 21,654.75
  4. Step 4: Simplify right side
    38,421.75x = 1,148,178,804.14
  5. Step 5: Solve for x
    x = 1,148,178,804.14/38,421.75
  6. Step 6: Final answer
    x = 29,883.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.